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From: Oliver O'Halloran <oohall@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: arbab@linux.vnet.ibm.com, bsingharora@gmail.com,
	linux-nvdimm@lists.01.org
Subject: ZONE_DEVICE and pmem API support for powerpc
Date: Wed, 12 Apr 2017 03:42:24 +1000	[thread overview]
Message-ID: <20170411174233.21902-1-oohall@gmail.com> (raw)

Hi all,

This series adds support for ZONE_DEVICE and the pmem api on powerpc. Namely,
support for altmaps and the various bits and pieces required for DAX PMD faults.
The first two patches touch generic mm/ code, but otherwise this is fairly well
contained in arch/powerpc.

If the nvdimm folks could sanity check this series I'd appreciate it.

Series is based on next-20170411, but it should apply elsewhere with minor
fixups to arch_{add|remove}_memory due to conflicts with HMM.  For those
interested in testing this, there is a driver and matching firmware that carves
out some system memory for use as an emulated Con Tutto memory card.

Driver: https://github.com/oohal/linux/tree/contutto-next
Firmware: https://github.com/oohal/skiboot/tree/fake-contutto

Edit core/init.c:686 to control the amount of memory borrowed for the emulated
device.  I'm keeping the driver out of tree for a until 4.13 since I plan on
reworking the firmware interface anyway and There's at least one showstopper
bug.


Thanks,
Oliver

             reply	other threads:[~2017-04-11 17:42 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-11 17:42 Oliver O'Halloran [this message]
2017-04-11 17:42 ` [PATCH 1/9] mm/huge_memory: Use zap_deposited_table() more Oliver O'Halloran
2017-04-12  5:44   ` Aneesh Kumar K.V
2017-04-18 21:35   ` David Rientjes
2017-04-11 17:42 ` [PATCH 2/9] mm/huge_memory: Deposit a pgtable for DAX PMD faults when required Oliver O'Halloran
2017-04-12  5:51   ` Aneesh Kumar K.V
2017-04-11 17:42 ` [PATCH 3/9] powerpc/mm: Add _PAGE_DEVMAP for ppc64 Oliver O'Halloran
2017-04-12  0:19   ` Stephen Rothwell
2017-04-12  3:07     ` Aneesh Kumar K.V
2017-04-13  5:20   ` Aneesh Kumar K.V
2017-04-11 17:42 ` [PATCH 4/9] powerpc/mm: Reshuffle vmemmap_free() Oliver O'Halloran
2017-04-12  0:33   ` Stephen Rothwell
2017-04-11 17:42 ` [PATCH 5/9] powerpc/vmemmap: Add altmap support Oliver O'Halloran
2017-04-12  0:24   ` Balbir Singh
2017-04-11 17:42 ` [PATCH 6/9] powerpc, mm: Enable ZONE_DEVICE on powerpc Oliver O'Halloran
2017-04-12  0:25   ` Balbir Singh
2017-04-12  0:43   ` Stephen Rothwell
2017-04-12  2:03     ` Michael Ellerman
2017-04-11 17:42 ` [PATCH 7/9] powerpc/mm: Wire up ioremap_cache Oliver O'Halloran
2017-04-23 11:53   ` [7/9] " Michael Ellerman
2017-04-11 17:42 ` [PATCH 8/9] powerpc/mm: Wire up hpte_removebolted for powernv Oliver O'Halloran
2017-04-11 22:50   ` Anton Blanchard
2017-04-12  0:18     ` Stephen Rothwell
2017-04-12  3:30       ` Rashmica Gupta
2017-04-12  1:53   ` Balbir Singh
2017-04-13  4:21     ` Oliver O'Halloran
2017-04-13 10:10       ` Michael Ellerman
2017-04-11 17:42 ` [PATCH 9/9] powerpc: Add pmem API support Oliver O'Halloran
2017-04-11 18:22 ` ZONE_DEVICE and pmem API support for powerpc Dan Williams
2017-04-12  9:14   ` Oliver O'Halloran
2017-04-12  1:10 ` Stephen Rothwell

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